CN202175722U - Forced cooling structure for cell shell of aluminum electrolytic cell - Google Patents
Forced cooling structure for cell shell of aluminum electrolytic cell Download PDFInfo
- Publication number
- CN202175722U CN202175722U CN2011202887878U CN201120288787U CN202175722U CN 202175722 U CN202175722 U CN 202175722U CN 2011202887878 U CN2011202887878 U CN 2011202887878U CN 201120288787 U CN201120288787 U CN 201120288787U CN 202175722 U CN202175722 U CN 202175722U
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- cooling
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- electrolytic cell
- electrolyzer
- shell
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Abstract
The utility model discloses a forced cooling structure for a cell shell of an aluminum electrolytic cell. An air inlet pipe of a cooling box (2) is connected with a compressed air connecting pipe (1), the box wall of the cooling box (2) is directly contacted with the cell shell (3) of the electrolytic cell, and an exhaust pipe of the cooling box (2) is connected with a collecting pipe (4). The cooling box (2) is installed above a cathodal steel bar between cradle racks at two sides of the cell shell of each electrolytic cell, and each electrolytic cell is provided with (20-30)*2 cooling boxes. The forced cooling structure solves the problem that the furnace upper of the electrolytic cell is thin as the current density is too high. The heat generated by recycled cooling is fully utilized to supply heating for the whole factory, the construction investment is saved, and the operation cost of production is saved.
Description
Technical field
The utility model relates to a kind of aluminum cell casing cooling structure.
Background technology
After the nineties, aluminium electrolytic industry constantly improves output through the increasing electrolyzer of development capacity in order to generate profit maximization, has become a kind of general strategy.It can reduce a ton aluminium cost, raises labour productivity, and improves the economic interests of enterprise.Along with the raising of three researchs of aluminium cell and computer-controlled development and electrolysis production use raw material quality, brought technical support for the exploitation of vast capacity electrolyzer.At present, with headed by the companies such as Alcan, Alcoa, Hydro, the anodic current density of its aluminium cell is significantly brought up to 0.78 ~ 0.9A/cm in the world
2Between, the capacity of electrolyzer has also reached 500KA.At home, the electrolyzer of existing part electrolytic aluminium factory begins anodic current density is brought up to 0.8A/cm
2Operation, simultaneously, the paces that the electrolyzer of 400 ~ 450KA capacity has also got into exploitation or gone into operation.
Along with the raising of anodic current density and the continuous increase of electrolyzer running current, the specific heat load or the heat dissipation capacity of electrolyzer per surface area increase considerably.At this moment, the pot shell surface temperature will inevitably raise.And the high more and electrolytical superheating temperature of pot shell surface temperature is big more, and ledge is just thin more, lift on the pot shell that the pot shell temperature stress causes be out of shape just big more.Therefore, increase electric current, phenomenon such as will inevitably occur lifting on the thin and pot shell of ledge, thereby cause the early damage of electrolyzer like no relative measures.
Existing in the world at present multiple measure hopes to solve the problem that electrolyzer pot shell surface temperature raises owing to current strengthening.Main method has: pot shell increases radiator element and pressurized air forces cooling and high-pressure blast to force cooling etc.In above-mentioned several method, the method that increases radiator element shows through the industriallization utilization, only can the homogenizing shell temperature, and to reducing its surface temperature effect and not obvious.Feed pressurized air and force to cool off, all adopt duct type directly pot shell to be cooled off at present with high-pressure blast, pressurized air and high-pressure blast through with directly drain into atmosphere after the high temperature pot shell contacts, cause the loss of energy.According to measuring and calculating, a 320KA pot line, mounting groove number are 288, the electrolytic aluminium factory that annual capacity is about 250,000 tons, and anodic current density is 0.85A/cm
2, when pot shell was not implemented to force cooling, about 400 ℃ of pot shell side wall temperatures through implementing to force cooling, reduced by 50 ℃ with serial electrolyzer pot shell temperature long term maintenance, needs to feed about 120m
3The air supply of/min; This means factory need dispose 1 air compressor machine continuously ceaselessly running specialize in cooling; To consume the electric power of about 19200KWH every day, need increase by 3,500,000 yuan of running costs (0.5 yuan/Kwh electricity price) when do not consider manual maintenance and equipment amortization every year.Simultaneously, initial cost will increase by 2,500,000 yuan (containing compressed air station and pneumatics recirculated water).If continue to improve running current, make anodic current density reach 0.9 A/cm
2, need this moment to reduce by 100 ℃ of shell temperatures, then need feed about 180m
3The air supply of/min, factory will consume the electric power of about 28000KWH every day more, need increase by 5,100,000 yuan of running costs (0.5 yuan/Kwh electricity price) when do not consider manual maintenance and equipment amortization every year.
Summary of the invention
The utility model wants the technical solution problem to be: provide a kind of aluminum cell casing to force cooling structure; Increase radiator element to overcome the pot shell that prior art exists, to reduce its surface temperature effect not obvious, pressurized air forces cooling and high-pressure blast to force cooling to cause the big deficiency of energy waste.
In order to solve described technical problem, the utility model adopts following technical scheme: the inlet pipe of cooling tank is connected with the pressurized air pipe connecting, and the tank wall of cooling tank directly contacts with the electrolyzer pot shell, and the vapor pipe of cooling tank is connected with collection tube.
Between the bassinet stand of every electrolyzer pot shell both sides, cooling tank is installed more than the cathode steel bar.
During work; Pressurized air inserts in the cooling tank through pipe connecting, inlet pipe, and the tank wall of cooling tank directly contacts with the electrolyzer pot shell, and pressurized air carries out heat exchange with pot shell in cooling tank; The heat of taking away the pot shell surface makes its cooling; Pressurized air after the heating is imported in the collection tube by the escape pipe of cooling tank, and every electrolyzer is provided with 20 ~ 30 cooling tanks according to the grooved size, after collection tube is collected the warm air of each cooling tank; Pool together, can supply full factory to carry out central heating or carry out the utilization once more of thermal source.So, it is too high because of the shell temperature that the electric current reinforcement brings both to have solved electrolyzer, again through recycling the required energy of cooling pot shell, the effect that reaches energy recycling and protect environment.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
The embodiment of the utility model: the inlet pipe of cooling tank 2 is connected with pressurized air pipe connecting 1, and the tank wall of cooling tank 2 directly contacts with electrolyzer pot shell 3, and the vapor pipe of cooling tank 2 is connected with collection tube 4.
Every electrolyzer is installed cooling tank 2 more than the cathode steel bar between the bassinet stand of pot shell both sides.
Every electrolyzer setting (20 ~ 30) * 2 cooling tank 2.
Produce 250000 tons of primary aluminum per year like certain electrolytic aluminium factory, adopt the large-sized prebaked electrolyzer of 300KA, do not obtain maximizing the benefits; Current strengthening moves to 340kA, anodic current density 0.831A/cm2, and series is installed 288 electrolyzers altogether; Every electrolyzer is equipped with 26X2 cooling tank more than the cathode steel bar between the bassinet stand of pot shell both sides, pressurized air is infeeded by the outside special line in workshop, is linked into respectively in each cooling tank; Cooling tank wall and electrolyzer pot shell are combined closely, and carry out heat exchange.Cold pressurized air is pooled in the collection box through becoming warm air after the heat exchange, is delivered to the outer storage tank of potroom again and stores, and the heating network system through full factory heats to office of full factory and lounge.Through the enforcement of the utility model, both solve electrolyzer and brought the thin harm of stove group owing to current density is too high, making full use of the heat that reclaims the cooling generation again is the heating of full factory, has saved construction investment, practices thrift the production run cost.
Claims (3)
1. an aluminum cell casing is forced cooling structure; It is characterized in that: the inlet pipe of cooling tank (2) is connected with pressurized air pipe connecting (1); The tank wall of cooling tank (2) directly contacts with electrolyzer pot shell (3), and the vapor pipe of cooling tank (2) is connected with collection tube (4).
2. aluminum cell casing according to claim 1 is forced cooling structure, it is characterized in that: cooling tank (2) is installed more than the cathode steel bar between the bassinet stand of every electrolyzer pot shell both sides.
3. aluminum cell casing according to claim 1 is forced cooling structure, it is characterized in that: every electrolyzer setting (20 ~ 30) * 2 cooling tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202887878U CN202175722U (en) | 2011-08-10 | 2011-08-10 | Forced cooling structure for cell shell of aluminum electrolytic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202887878U CN202175722U (en) | 2011-08-10 | 2011-08-10 | Forced cooling structure for cell shell of aluminum electrolytic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202175722U true CN202175722U (en) | 2012-03-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202887878U Expired - Lifetime CN202175722U (en) | 2011-08-10 | 2011-08-10 | Forced cooling structure for cell shell of aluminum electrolytic cell |
Country Status (1)
| Country | Link |
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| CN (1) | CN202175722U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469253A (en) * | 2013-10-10 | 2013-12-25 | 郑州大学 | Forced heat transferring type aluminum electrolyzing groove |
| CN107090588A (en) * | 2017-06-26 | 2017-08-25 | 河南工程学院 | A kind of heat preservation of aluminium electrolytic cell regulation and afterheat utilizing system |
| CN110512235A (en) * | 2019-08-06 | 2019-11-29 | 铜陵四通环境科技有限公司 | A kind of strong sealed electrolytic cell suspended hood of lift |
-
2011
- 2011-08-10 CN CN2011202887878U patent/CN202175722U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469253A (en) * | 2013-10-10 | 2013-12-25 | 郑州大学 | Forced heat transferring type aluminum electrolyzing groove |
| CN107090588A (en) * | 2017-06-26 | 2017-08-25 | 河南工程学院 | A kind of heat preservation of aluminium electrolytic cell regulation and afterheat utilizing system |
| CN110512235A (en) * | 2019-08-06 | 2019-11-29 | 铜陵四通环境科技有限公司 | A kind of strong sealed electrolytic cell suspended hood of lift |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120328 |
|
| CX01 | Expiry of patent term |